what commit and rollback

MySQL supports table-level locking of tables for the MyISAM and memory storage engines, row-level locking of tables in the BDB storage engine, and row-level locking of tables InnoDB the storage engine. By default, table and row locks are

This article mainly introduces php's method of using transaction to handle the transfer problem. The example analyzes php's transaction commit and rollback skills. For more information, see This article mainly introduces php's method of using

Java Web series: JDBC basics, webjdbc The corresponding technology of ADO. NET in Java is JDBC, the enterprise database DataAccessApplicationBlock module corresponds to the spring-jdbc module in Java, and the corresponding ORM of EntityFramework in

I. Basic classes required by database transactions (1 ). sqlConnection is used to connect to the database; (2 ). sqlCommand is the execution of SQL statement commands; (3 ). sqlTransaction is the start of a transaction. 2. transactions are

Oracle experience 5 -- add, delete, modify, query, and @ oracle transaction processing @ Case Analysis1. add, delete, modify, and query DML (Data Manipulation Language-Data operation Language) in Oracle can be executed under the following conditions:

ORACLE _ Data Processing ORACLE _ Data Processing ① Data manipulation languageDML (Data Manipulation Language-Data Manipulation Language) can be executed under the following conditions:Insert data to a tableModify existing dataDelete existing

This article summarizes Oracle transactions, introduces transaction features, transaction management, transaction reads, and provides examples. For more information, see this article. This article summarizes Oracle transactions, introduces

This article mainly introduces the method of thinkphp 3.2.2 to implement transaction operation, analyzes the operation methods of transaction initiation, commit and rollback in thinkphp, and gives the complete transaction commit and rollback

This article mainly introduces the method of thinkphp 3.2.2 to implement transaction operation, analyzes the operation methods of transaction initiation, commit and rollback in thinkphp, and gives the complete transaction commit and rollback

This article mainly tells you about the definition of DB2 9.7 autonomous transactions and the background of some transactions in their actual operations. We all know how to understand IBM DB2®Version 9.7 for Linux®, UNIX®, And Windows®The autonomous

The following example creates an oledbconnection and an oledbtransaction. It also demonstrates how to use the begintransaction, commit, and rollback methods. Public void runoledbtransaction (string myconnstring){Oledbconnection myconnection =

Original: Https://msdn.microsoft.com/en-us/data/dn456843.aspxPrior to EF6 Entity Framework insisted on opening the database connection itself (it threw an exception if it is passed a Connection that is already open). Since a transaction can only is

Oracle Transaction Management A transaction contains one or more SQL statements. It is a logical unit of work (atomic unit ).The SQL statement that starts the first execution of a transaction and ends with a Commit, Rollback, or DDL statement.Note:

I. Introduction to transactions. NET Framework developer GuideA transaction is an operation that combines logical units of work. Although errors may occur in the system, the transaction controls and maintains the consistency and integrity of each

Proxy refers to the unrelated code that is combined to run at runtime. This improves the maintainability of the program and completely isolates the Business Code from the server code. This example uses person. -- the next article is about writing

1 DB2 Programming 1.1 do not use the TAB key after creating a stored procedure Create procedureYou can only use spaces, but not tab keys, otherwise the compilation will fail.Remember, remember. 1.2 use temporary tables Note that temporary tables can

CI source code analysis (III)-DB transactions, ci source database transactions(0) UsageYou can use the method provided by the system: $ this-> db-> trans_start (); // start the transaction $ this-> db-> query (); // execute sqls $ this-> db->

The MySQLdb module is a module used by python to connect to the mysql database. It is frequently used to operate mysql databases. connect is the most commonly used method when connecting to databases. This method has many parameters, to sum up,

Spring does not directly implement transaction management. It only manages which methods require transactions and calls the underlying transaction manager through AOP for transaction management. the classes that need transaction management are

    sometimes have some headaches when doing projects based on a lower version of Oracle. For example, to perform a current transaction (transaction) consisting of multiple DML, record some information for each step of DML into the trace table,